EBay is rife with (https://www.ebay.com/itm/Gigabyte-GA-Z77P-D3-V1-1-Motherboard-Intel-Z77-Express-LGA-1155-DDR3/263407879745?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m2749.l2649) with these gigabyte refurbs. I've ordered one for my i5-2500K (same board it's been on for over 6 years, came up bum after blowing 6 years worth of dust out of it.) If it works, great, if not, that's all I'm going to waste bringing it back to life. It owes me nothing.
Good Luck!